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ESE 2019:Engineering Materials Quiz-4

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Question 1

Vinyl ester resins are used in marine industry as they have:

Question 2

Automobile tyres are made of Particle Reinforced Composites because of:

Question 3

Direction: The following items consists of two statements; one labelled as ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Assertion (A): Most of the materials exist in single crystal.
Reason (R): Sugar is a single crystal material.

Question 4

Consider the following statements in a binary phase diagram:
[1]. the freezing point of the alloy is minimum.
[2]. eutectic mixture solidifies at a constant temperature like pure metal.
[3]. eutectic reactin is irreversible.
[4]. at eutectic temperature, liquids of two metals will change into two solids
Which of the above statements are correct?

Question 5

A: Cast iron is used as the material for base of heavy machinery.
R: Cast iron has good vibration damping properties.

Question 6

In true stress and strain graphs shown in work hardening, which represents young modulus?

Question 7

The correct order of increasing resistivity among the following materials is :

Question 8

Consider the following pairs regarding plastics and their respective characteristics:
1) Polycarbonate: Poor impact resistance
2) PTFE: Low coefficient of friction
3) Polypropylene: Excellent fatigue strength
Which of the above pairs is/are correctly matched?

Question 9

Which alphabet in heat treatment represents Tempering process in materials?

Question 10

Arrange the following materials in the increasing order of their tensile strength?
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